MenuBar clipping rectangle fix for bordered mode

Various adjustment for border to be inside instead of outside the window size

Demo: Tweak window option and style display

Demo: Added style editor in demo menu + exposed WindowFillAlphaDefault

Fixed SizeContents and auto-fit size not being rounded to integer, which affects border rendering when using non-default font

Added ImGuiIO::ClearInputCharacters() superfluous helper.

InputText: update mouse drag on mouse move only & key input reposition selection bounds (better fix for #429)

InputText: when keys are being input while mouse is dragging, disable mouse drag until button release (#429)

Examples: Fixed msvc batch files from warning.

Metrics: computing drawcmd bounding box handle case where buffer has been de-indexed.

Minor tidying up of now redundant code

Renamed Color() helpers to ValueColor() - dangerously named, rarely used and probably to be made obsolete.

Added SetItemAllowOverlap() exposed in imgui_internal.h only

Merge branch 'JuJuBoSc-master'

Examples: DirectX10: Minor tweaks, updated to latest example changes (#424)

Examples: DirectX10: Fix warning, disable debug device, add ignore list (#424)

Merge branch 'master' of https://github.com/JuJuBoSc/imgui into JuJuBoSc-master

Removed d3d11 references

Updated stb_truetype 1.07 -> 1.08

Ported d3d11 renderer to d3d10

Merge pull request #420 from RaptorFactor/master ...

Examples: DX11: Compile shaders with lower features levels.

Allow DX11 renderer to be used with devices with lower feature levels.

Examples: DX11: Remove debug flag (#415)

Commenting asserts

TreeNode/CollapsingHeader: some minor cleanup of that horrible function.

TreeNode/CollapsingHeader: some minor cleanup of that horrible function.

Comments & spacing

Added comment on using PushFont() before building the font (#232)

Demo: some TreeNode layout examples (#414, #282)

TreeNode,CollapsingHeader: sizing fixes to support laying out item on same line before/after (#414, #282)